body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #F5F5F7;
}

.navbar {
    display: flex;
    overflow: hidden;
    background-color: #555555;
    position: fixed;
    top: 0;
    width: 100%;
    margin: 0 auto;
    justify-content: center;
    z-index: 1000;
}

.navbar a {
    float: left;
    display: block;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    margin: 0 15px;
}

.navbar a:hover {
    background-color: #dddddd;
    color: black;
}

.navbar img {
    width: 30px;
    height: auto;
    float: left;
    text-decoration: none;
    filter: brightness(100%);
    transition: filter 0.3s;
}

.navbar img:hover {
    filter: brightness(150%);
}